Technics SU-G700M2 Grand Class

Features

JENO Engine: In order to faithfully transmit the massive amount of audio data sent to the speakers without loss, the SU-G700M2 power amp section uses full digital amplification employing the JENO Engine. In order to solve the issue of sound quality degradation due to jitter, which poses problems for conventional digital amplifiers, the SU-G700M2 has an original jitter reduction circuit that eliminates jitter over the entire audible frequency range. Also, a unique, high-precision PWM (Pulse Width Modulation) conversion circuit is used for PWM conversion, which is important for sound quality. By optimizing items such as the noise-shaping speed, degree, and quantization number through Technics' unique expertise, data even in the wide dynamic range contained in high-resolution sound sources is converted to PWM signals without loss. These technologies provide reproduction of natural and finely detailed sound, enabling perception even of delicate music nuances.

• 8-Ohm: 70 watts x 2 channels @ 1kHz with 0.5% THD
• 4-Ohm: 140 watts x 2 channels @ 1kHz with 0.5% THD

LAPC (Load Adaptive Phase Calibration): Speaker impedance changes with each frequency and a power amplifier is required to drive speakers without being affected by the speakers' characteristics. However, conventional digital amplifiers are connected to speakers through a low-pass filter at the output stage, so they are even more strongly affected by the speaker impedance characteristics. Also, although the amplitude characteristics of conventional amplifiers due to negative feedback were improved, the phase characteristics could not be enhanced. Technics thus developed a speaker impedance adaptive optimization algorithm that performs correction to the ideal impulse response through digital signal processing by measuring the frequency amplitude-phase characteristics of the amplifier with the speakers connected. This new technique enables flattening the frequency characteristics of amplitude and phase, which had previously not been achieved by amplifiers, as well as delivering a sound with rich spatial expression.

Advanced Speed Silent Power Supply: The power supply technology incorporated in Technics' reference-class model SU-R1000 has been employed in the SU-G700M2 for improved speaker drive power and a greater feel of energy. The switching frequency has been increased from the conventional 100kHz band to the 400kHz band to ensure stable supply of voltage and current and to reduce adverse effects of modulation noise on the audio quality. The device is equipped with the same GaN FET and SiC SBD as those mounted in the Technics SU-R1000 to deliver maximum performance from the high-speed switching power supply system. Furthermore, low-noise reference voltage generation and control circuits ensure stable power supply output with minimum noise.

• Super High Speed Switching Supply: High frequency switching reduces ripple noise by shifting the switching frequency into higher ranges that are off the audible audio range. This eliminates adverse effects on the audio quality by avoiding the use of voice band frequencies.
• Super Low Noise Regulator: A Super Low Noise Regulator is provided in the later stage. It prevents the decrease of regulation due to fixed switching frequency and impedes the mixing of noise component into high frequencies. The result is a low-noise and high-response power supply that maximizes the performance of the digital amplifier.
• Block Electrolytic Capacitor: The power supply unit for the amplifier features Technics’ exclusive block electrolytic capacitor optimized through precision tuning, which was previously installed in the Technics reference-class model SU-R1000.

3-Section Configuration: In integrated amplifiers there are a variety of circuits, including circuits that handle the micro-signals of inputs and those that handle a large current, such as output circuits and power-supply circuits. The SU-G700M2 uses a 3-section construction with partitions installed between the circuit blocks according to the signal level handled. This eliminates interference between circuit blocks, thus achieving clear sound quality. In addition to the 3-section construction, the SU-G700M2 comes with a bottom chassis featuring a 2-layer construction with 1.2mm-thick and 2mm-thick steel plates, a top-panel made of a 1.6mm-thick steel plate and a 7mm-thick aluminum front-panel for improved vibration damping.

Class AA Headphone Amp: The SU-G700M2 features a front-panel 1/4" headphone jack and uses a Class AA headphone amplifier with separate amplifier circuits for voltage amplification and current amplification of the audio signal. The voltage is amplified by a high-grade operational amplifier, the current is amplified by an operational amplifier with high current-supply capability, and the high-grade PWM signal output from the JENO Engine is converted to analog with high precision, thus enabling headphones to be ideally driven. This makes it possible to reproduce music with low distortion and a wide frequency range no matter what the headphone impedance load.

Low-Noise Phono Input: The Technics SU-G700M2 integrated amplifier's Phono input achieves low noise by using a differential parallel connection configuration of a first-stage, low-noise FET. In addition, 4-level gain adjustment enables selection of the best gain according to the cartridge type (MM or MC) and output. This enables optimal playback of high-grade analog recorded sound sources tailored to your application. The integrated amp's large Phono ground terminal will accommodate a thick, large-diameter ground wire.

High Quality DAC: The Technics SU-G700M2 integrated amplifier employs a high quality DAC (digital-to-analog converter) for its USB-B input, as well as its optical (toslink) and coaxial (RCA) digital inputs. The internal DAC can support up to 32-bit/384kHz via USB-B, up to 24-bit/192kHz via Coaxial digital, and up to 24-bit/192kHz via Optical digital.

USB-B Input with Technics Audio Player App: The SU-G700M2 is equipped with a USB-B input for connection to your Windows PC or Mac computer. You'll be able to playback a variety of compressed and Hi-Res music files stored on your laptop or desktop computer through the Technics integrated amplifier. You'll need to download the Technics Audio Player onto your Windows PC or Mac computer. The Technics Audio Player is a music player application for Windows and Mac with high-resolution audio data processing capabilities. It also provides control functions such as Playlist (Create/Edit/Save), Play/Pause/Stop, Previous/Next Track, Shuffle/Random, and Repeat (Playlist/Tack).

• PCM(.wav): 44.1 to 384 kHz; 16 to 32-bit
• FLAC(.flac): 44.1 to 384 kHz; 16 to 24-bit
• AIFF(.aiff,.aif): 44.1 to 384 kHz; 16 to 32-bit
• ALAC(.m4a): 32 to 96 kHz; 16 to 24-bit
• MP3(.mp3): 32 to 320 kbps
• DSF(.dsf): 2.8/5.6/11.2MHz; 22.4MHz (Windows OS / ASIO Native mode only)
• DSDIFF(.dff): 2.8/5.6/11.2MHz; 22.4MHz (Windows OS / ASIO Native mode only)

Notes: Compatible Windows & Mac operating systems -

• Windows: 8.1 and 10 - *requires dedicated USB driver for Windows
• MacOS: 10.12, 10.13, 10.14, 10.15, 11.0, 11.1, 11.2, 11.3, 11.4 - *no additional USB drivers required for Mac computers

Optical & Coaxial Digital Inputs: The Technics SU-G700M2 is outfitted with two optical (toslink) and two coaxial (RCA) digital audio inputs to connect a CD or SACD player. These digital inputs support 16-bit or 24-bit 2ch PCM audio files. The optical digital inputs will supports up to 96kHz sampling frequencies, while the coaxial digital inputs will accept up to 192kHz sampling frequencies.

Note: The optical and coaxial digital inputs do not support Dolby Digital, DTS, or other multichannel audio formats.

Analog Line Inputs & Outputs: In addition to its Phono MM/MC input, the SU-G700M2 features two sets of stereo analog line-level RCA inputs and one set of outputs. The stereo analog line-level RCA inputs can be used to connect a CD player or AM/FM tuner. The stereo analog line-level output can be used to connect a CD recorder to record audio from the integrated amp's analog line-level inputs or Phono input.

Note: The analog line output does not support the optical/coaxial digital inputs and USB-B input.

Speaker Outputs & Preouts: The Technics SU-G700M2 is equipped with speaker output terminals and a stereo RCA preout for different applications.

• Binding Post Terminals: The SU-G700M2 is outfitted with sturdy, heavy-duty binding post speaker output terminals that will accept bare wire (up to 10AWG), pin-connectors, spade-lugs, or banana plugs (single only). The screws used for securing the wires sending audio signals to the speaker terminals are made of nonmagnetic brass. You can connect a pair of 4 to 16 ohm loudspeakers.
• Stereo RCA Preout: The SU-G700M2 has a stereo RCA preout that allows you to connect an external power amplifier or powered subwoofer. The stereo RCA preout is full-range, so you'll need a powered sub with its own low-pass crossover filter.

Note: You can have sound output from both the integrated amp's binding post speaker output terminals and the stereo RCA preout at the same time. You can also turn-off the stereo RCA preouts or speaker outputs, so sound is only output from one of them (not both).

Front-Panel Display & VU Meters: The Technics SU-G700M2 integrated amp features a front-panel display window which indicates Input Source Selection, Volume Level, and Menu Settings. It also features two front-panel Peak Power Meters for the amplifier's Left & Right channels.

Front-Panel & Remote Control: The Technics SU-G700M2 offers convenient front-panel control for Power On/Off, Input Source Selector, and Volume Up/Down. The included IR remote control provides full wireless operation of the SU-G700M2 integrated amplifier. The remote can also be used to operate playback functions of Technics Network and SACD players (sold separately). There is a rear-panel Control Input (3.5mm) that allows control synchronization with other Technics audio components so they are turned on and off at the same time, as well as switch to the correct input source automatically.

Audio Controls: The Technics SUG700M2 integrated amplifier offers Bass, Midrange, and Treble adjustment from -10 to +10. It also offers balance control (18db L/18dB R) and Mute (ATT) function. The volume control range for this unit is -98.0 dB (min) to -20.0 dB (max).

Power Requirements: The Technics SU-G700M2 comes with a detachable 6' AC power cord (IEC 2-prong) that will need to be plugged into the back of the integrated amplifier and an AC power outlet or surge protector/line conditioner (sold separately - see Accessories Tab). If the integrated amp is left unused with no audio signal or operation for about 20 minutes, the unit will enter Standby mode to conserve its power consumption and save energy.

Service & Firmware Updates: There is a rear-panel USB-A port on back of the SU-G700M2 integrated amp that is used for service and updates only. You can check here for the latest and newest firmware updates.